Forces come in pairs. What are these pairs called

A parachutist bails out and freely falls 50 m. Then the parachute opens, and thereafter she deceler - ates at 2.0 m/s2. She reaches the ground with a speed of 3.0 m/s.

An engineer is designing a spring to be placed at the bottom of an elevator shaft. If the elevator cable breaks when the elevator is at a height h above the top of the spring, calculate the value that the spring constant k should have so that

Why are humans more like animals than plants?

Jane, looking for tarzan, is running at top speed (5.2 m/s) and grabs a vine hanging 4.5 m vertically from a tall tree in the jungle. how high can she swing upward?

Electromagnets 23. To hold fire doors open, an electromagnet is switched on, generating a magnetic field If a solenoid is 2.00 cm long, has 400 turns, carries a current of 1.

Distance divided by time what is velocity

The decay constant of a radioactive nuclide is 4.6 x 10^-3 s^-1. What is the half-life of the nuclide? 2.5 min 2.0 min 1.4 min 3.6 min 3.1 min

A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a fortnight is a unit of time corresponding to two weeks, or 14 days and nights.

What is the unit measurement for pain relief tablets and is it SI units Or English system?

You hold a metal ring horizontally above a bar magnet standing on its end. You drop the ring and catch it before it reaches the magnet.